yes the 900 na has lots of torque ( about the same as a 800 e tech)
the biggest difference will be top speed
the 900 na is geared much slower than a turbo
lower gear ratio gives the 600 and 900 enough torque
to move the big sleds in heavy snow
yes a turbo muffler must flow more air
so more flow causes more noise
they actually use a 900 na in a 2000lb sxs
and use the same clutches and belt as a turbo

 

Thanks. Yes even with my current 850 backcountry I rarely hit 60mph. Usually cruise around 50.

 

Im going to spring check an SE 900 N/A. I’m not worried about anything over 70 mph, the key with wide tracks is to not get them spinning in deep snow. It has enough torque to get through over flow, are you getting the pre studded?

 

https://www.dootalk.com/threads/identical-24-renegade-ace-900-sleds-shipped-with-different-mufflers.1635508/#post-24442832

The turbo muffler is louder than the na. I have db readings on a 900na with the na muffler and with the turbo muffler.


Keep in mind the turbo itself will muffle noise so my numbers for the turbo muffler on the na will be louder than the turbo would be. The na is quite though, I really enjoy it.

If it doesn't handle slush stock then Gear it and clutch it and it will handle the slush fine. The na has plenty of torque

 

Im going to spring check an SE 900 N/A. I’m not worried about anything over 70 mph, the key with wide tracks is to not get them spinning in deep snow. It has enough torque to get through over flow, are you getting the pre studded?

Haven't decided. I currently have a 1.6 ice cobra, but was contemplating the 1.8 as I'm usually not running on ice.

https://www.dootalk.com/threads/identical-24-renegade-ace-900-sleds-shipped-with-different-mufflers.1635508/#post-24442832

The turbo muffler is louder than the na. I have db readings on a 900na with the na muffler and with the turbo muffler.


Keep in mind the turbo itself will muffle noise so my numbers for the turbo muffler on the na will be louder than the turbo would be. The na is quite though, I really enjoy it.

If it doesn't handle slush stock then Gear it and clutch it and it will handle the slush fine. The na has plenty of torque

Thanks for the info on the mufflers! I'd be happy to add a clutch kit if that gives me some more low end snap in the slop. Top end isn't a priority for me with this sled.

 

Get the turbo. It’s slightly louder(I have both), but the power to get out of situations is very nice with the 130. The NA labors turning that big track when the snow is wet.

 

I went from a 2019 Expy SWT 900NA to a 24 900T this year. Mostly identical machines given the switch from XU chassis to G4, the only significant difference is the track going from 1.25 to 1.5 paddle. I have around 1000 miles on the new one, and I'll never go back to a NA.

I live off grid in the swamps in Alaska, my machine is a daily driver, wood hauler, trapline runner, and fun on the weekend with the boys machine. I ride a lot of hard pack trails, but spend a lot of time in the back country poking around in trees and swamps as well.

There were 2 issues I wanted to address with the turbo. When I rode 2-3 feet of sugar powder, the track would sink enough to be at the point where you really need to spin it fast and get on top, and the 900 just didn't quite have the nuts to do that. So in those conditions, you just kinda slog along at 30mph or so, more or less swimming thru it. You never get stuck, you just can't go faster than 35, there's just not enough power.

The second(and bigger, for me) issue was slush on lakes. I cross lakes everywhere I go, and there's times we can have 12-18" of slushy overflow. Generally you find out when you get that sinking feeling on the back end and suddenly need a ton of throttle just to move. I never actually got stuck with the 900, but there were enough times I had the throttle full pin and BARELY crawled thru it, that I really wanted more. Heavy slush will load that big track and suck power like nothing else. So I ordered a 900T.

Yes, yes, and yes. The T fit the bill, and added a fun factor I wasn't expecting. That almost instant burst of "Hey, let's take off and go, right now" when you hit the throttle is amazing, given the weight of a big Expedition. Soft deep powder is no issue, there's plenty of track speed to throw a small mountain out the back, and climb on top and go. I've gotten tangled up with some nasty overflow a few times so far, and not come even close to getting stuck. It was a pretty good feeling to see the slush under my track, as well as the snow for 5 feet on either side swirling away behind me when I pinned it. That turbo can just move a lot of whatever is under the track.

Downsides... It is louder. Not significantly louder, there's more of a bark, I call it. I don't mind it, and I've gotten to where I really like hearing it.

The turbo makes a lot of heat. The fan kicks on for a minute or 2 every time you shut it down, to blow the heat out from under the hood. Great glove warmer, and there's never ice or snow anywhere on the hood, panels, or dash. Some don't like the noise of the fan after shutdown, but it really doesn't bother me. I always let mine idle for a minute or so before shutdown, just to let the turbo cool off a bit. Dealer told me that isn't necessary, but I do it anyway. Manual says to let it cool before shutdown.

Fuel mileage definitely drops with the turbo. My NA routinely got 18mpg with my style of riding. The turbo struggles to get to 12mpg. A large part of that is me and my thumb, and how much I like to smile... I'm sure if I rode it like a 900NA, it would do better... but then what's the fun in that? I don't mind burning a few extra jugs of premium in exchange for the performance I get. I figure it'll cost me an extra $300 a year between the fuel mileage drop and having to run premium. If that stops the show, I probably shouldn't be out riding at all...

For me and what I do, I'll never, ever ride a lower HP machine. If they made a 900 that puts out 130hp without a turbo, I'd go that route for the simplicity. But I'll never ride a NA with 95hp again... I love my new turbo! Sorry for the long read. But it's real world experience for you😉

 

I went from a 2019 Expy SWT 900NA to a 24 900T this year. Mostly identical machines given the switch from XU chassis to G4, the only significant difference is the track going from 1.25 to 1.5 paddle. I have around 1000 miles on the new one, and I'll never go back to a NA.


Downsides... It is louder. Not significantly louder, there's more of a bark, I call it. I don't mind it, and I've gotten to where I really like hearing it.

For me and what I do, I'll never, ever ride a lower HP machine. If they made a 900 that puts out 130hp without a turbo, I'd go that route for the simplicity. But I'll never ride a NA with 95hp again... I love my new turbo! Sorry for the long read. But it's real world experience for you😉

That used to be called a 1200. I wish it was still offered.